Newsletter |
21,2 |
Location |
Queen Alexandra Range |
Field Number |
9105 |
Dimensions (cm) |
1.0 x 1.0 x 0.5 |
Weight (g) |
0.72 |
Original Classification |
C2 Chondrite |
Updated Classification |
CM2 Chondrite |
Pairing |
QUE 93004;
QUE 93006;
QUE 93017;
QUE 97003;
QUE 97005;
|
Fayalite (mol%): 0-46;Ferrosilite (mol%): 1-2 |
B |
A |
Small patchy black fusion crust is visible on the exterior. Exposed interior has black matrix with white mm to sub-mm sized white chondrules. There are some dull rusty circular stains present. The interior is a dull black matrix with numerous yellowish and white chondrules and metal grains. Irregularly shaped clasts are present and are mm to sub-mm in size. |
A single description can be given for these sections. They consist of small chondrules (up to 0.8 mm), aggregates and mineral grains in a black matrix. Olivine compositions range from Fa0-46, with most Fa0-2. Low-Ca pyroxene is Fs1-2. The matrix is composed dominantly of Fe-rich serpentine. The meteorites are C2 chondrites and pairing with the QUE 93004 pairing group is possible. |
Many carbonaceous chondrites were initially classified as C2 in early newsletters. These are mostly CM2, based on matrix properties, chondrules abundance and sizes, and therefore all these samples have been reclassified more specifically here as CM2. |